Friction hinge



. Patente! Mar. 1, i927.

AUNITED s'rA'ras PATENT OFFICE.

:mons i. rumeur, or STERLING, mtnrors, Assieuon. oir omi-mr 'ro :omi n. mwnnucn Nn omi-HALF 'ro EDWIN ir. LawnnNcn, oir srnnnme, rumors.

FBICTION HINGE.

Minimum; 'ma my 1,1m. semi iu. 40,753.

M invention relates't leaf hinges and has or `its object to provide a hinge of that type with means by which vthe freedom of movementI of the leaves with respect to' each other may be nicely regulated. For some to provide hooks or some other form of device to secure the Window in a more or less open position and prevent it from s lamming. A hinge that will present considerable frictional resistance to the swinging of such windows has long been recognized las desirable, and particularly one that could be conveniently adjusted to regulate such frictional resistance, but so far as I am aware, prior to my present invention no such hinge has heretofore 4been devised.

`The hinge which forms the subject matter of this application does, however, meet these conditions very satisfactorily, as will be apparent from the following description thereof in connection with the accompanying drawings. The features that I regard as new and claim Ias my invention are set forth in the appended claims.

' In the accompanying drawings,

Fig. 1 is a perspective view illustrating my improved hingefapplied to a French window, part only of which is shown;

Fi 2- is a somewhat similar view showint e hinge in vertical section;

ig. 3 is a partial elevation showing the lower portion of the hinge; v

Fig. 4 is a perspective view of one of the bushings that forma part of the hinge;

Fig. 5 is a fragmentary view showing the lover end of the lower knuckle of the hinge; an

Fig. 6 is a perspective view of the lower cap or button that cooperates with the knuckle shown in Fig. 5.

Referring to the drawings,7 indicates art of a window frame and 8 part. of a rench window hinged thereto by means of my improved hinge which comprises two leaves 9 and 10, one of which is secured to the window frame and the other to the window in the usual way. In the arrangement shown the leaf 9. is provided `with upper and lower knuckles 11, 12, respeclvel spaced apart to receive between them uckle 13 of the leaf 10. Y.As clearly shown in Fig. 2, the width of the leaf 10 is somewhat less than the distance between the knuckles 11, 12, the purpose of which arrangement will resently be explained.

Fitted 1n the re of the knuckle 11 is al bushing 14, preferably of brass, which bushing is slightly longer than the width of the knuckle 11 and is provided at lits lower end 65 with an `annular flange 15 that bears against` the lower end of said knuckle. The arrange-v ment is such that when the bushing place its upper end projects slightly above the upper end vof said shown in said ligure. The bushing 14 has a driving fit in the knuckle 11, or is otherwise arranged so that it rotates with .said knuckle but may move endwise therein.

vIn like manner the lower knuckle 12 is 75 l provided with a 'bushing 16 similar in all respects to the bushing 14, except that it is reversely arranged, its annular flan e 17 abutting against the ,upper end o' the isinI knuckle, as clearly 7n knuckle 12, while the lower end of said bushing projects slightly below the lower end of said knuckle.

.The knuckle 13 of the leaf 10 is provided with -two bushings '18, 19 fitted in its upper and lower ends, respectively, in the same 35 manner as the bushin s 14, 16 are fitted in the knuckles 11, 12. he bushing 18 is provided at its upper end with an annular flan e 20 that abuts against the upper end of t e knuckle 13 and also bears against the proxi- 90 mate end of the bushing 14 and the annular flange 15 thereof. Similarly the bushing 19 is provided at its lower end with an annular lian e 21 that in like manner cooperates with the ushing 16 and flange 17. To this end 95 the length of the knuckle 13 is such that when its bushings are in place it will fit closely betweenthe bushings carried by the upper and lower knuckles 11, 12, which of course requires that the knuckle 13 be made 100 somewhat shorter than the distance between lthe knuckles 11, 12.

The hinge is providediwith a pintle 22 that passes through the several bushings and is provided at one end, preferably its upper screw-threaded, as shown at 25 in Fig. 2, 110

and is adapted to receive a cap or nut 26 which screws on the screw-threaded part 25 of the pintle.

As best shown in Fig. 6, the inner :face of the ca 26 is provided with one or more lugs 27` that are adapted to enga e notches 28 in the lower end of the knuc e 12, as best shown in Figs. 3, 5 and 6, when the cap isscrewed up on the pintle or rather when the pintle is screwed into the cap.

From the fore oing description it will be understood that y screwing the intle 23 into the cap 26, which may be eas' y accomplished by the-use of a screw driver, since the cap is held against rotation by the engagement of the lu s 27 with the notches 28, pressure will be rought to bear a amst the ends of the bushings 14, 16, tendin to move them through the knuckles in w ich they are mounted and force them together to bind 'them tightly against the bushings 18, 19 carried by the knuckle 13. Inasmuch as the several bushings rotate with the several knuckles in which they are mounted, it will therefore be apparent that the frictional enga ement between the upper'and lower pairs ofushings will resist swinglng of the leaves of the hinge with relation to each other, and that the extent of such resistance may be nicely controlled or regulated by turninlg the pintle in one direction or the other re atively to the cap 26 which, as has been explained, may be easily accomplished by the aid of a screw driver.

While my improved hinge is intended primarily for use on French windows, it 'ma be used for any other purpose to which it is adapted, and the claims hereinafter made are intended to include any other such uses. Furthermore, while I have illustrated my invention as embodied in a three knuckle hinge, and have shown two pairs of bushings, I wish it to be understood that my invention is not restricted to the arrangement shown, but includes such modificationsV thereof, or variations therefrom, as would occur to those familiar with the art. For example, instead of securing the ca 26 against rotation and rotating the pint e to velg the frictional engagement of the pairs -of u shings, the pintle may be held against rotation and the ca rotated for making such adjustment, this bein merely a reversal of the arrangement i lustrated.

What I claim as my invention and desire to secure by Letters Patent, is-

1. The combination with a leaf hinge, of bushings tted in knuckles of the respective leaves and having annular flanges in frictional engagement with each other, said bushings being arranged to rotate with their respective leaves and one of said bushin being movable toward the other inde n ently of the knuckle in which it is fitt and means adjustable to vary the frictional -one of said bushin -theother indepen entl of the knuckle in bushings fitted in and rotatin with knuc es of the rpective leaves, said ushin a being 1n frictional engagement with eac other being movable toward which it is tted, an a pintle extending through said bushings and bearing against the outer end of one of said bushings and operable to adjust the frictional engagement between said bushings.

4. The combination with a leaf hingeA of bushings fitted in and rotatin with knuc es of the respective leaves, saidushi being in frictional engagement with eac other, one of said bushin being movable toward the other inde n ently of the knuckle in which it is fit a pintle rotatable extending through said bushings and bearing against the outer end of one of said bushings, a cap screwed on one end of said pintle, and means for holding said cap against rotation with the pintle.

5. The combination with a leaf hin of bushings fitted in and rotating wi the knuckles thereof,'the bushings in the end knuckles being arranged to roject beyond the outer ends theerof and in movable toward each other independent y of the knuckles in which they are respective] fitted, the bushings carried by the knuc es of the opposite leaves being arranged to have frictional contact with each other, a pintle extending through said bushin and a cap screwed upon said pintle an cooperating therewith to va the frictional engagement between said bus ings.

6. A leaf hin e comprising leaves having knuckles, cylin rical bushings fitted in the end knuckles and frictionally coacting with the adjoining knuckles to resist relative movement of said leaves, and means for adjusting one of said bushings relatively to the other independently of the knuckle in which it is tted to vary the frictional resistance tending to impede swinging of the leaves.

7. A. leaf hinge comprising leaves having knuckles, bushings fitted in and rotating with said knuckles, the bushing fitted in one of the end knuckles extending outward beond the same, adjacent ends of said bushings being larranged to have frictional eniso gagement with each other to resist relative movable relatively to each other longitudi- 10- movement of the leaves of the hinge, and a vnally of the axis of the hinge, independently pintle extending throu h said bushings and of the knuckle in which they are mounted, operable to adjust the riotional engagement to vary the frictional resistance tending to 5 between them.- impede Swingin of said leaves, and means 8. A leaf hinge comprisi leaves having operable to app y endwise ressure to said 15 knuckles, the end knuckles in provided bushings to draw them re atively toward with friction bushings mounted t erein and each other. rotatable therewith, said bushings being THOMAS P. ENRIGHT. 

